The Virial Theorem and Stellar Structure

• derivation from hydrostatic equilibrium
• application I: mean stellar temperature
• application II: total stellar energy

The Virial Theorem and Stellar Evolution

• requirement to maintain equilibrium: fuel source
• transitions between equilibrium states
• stability: non-relativistic ideal gas
• stability: relativistic gas

Stellar Energy Sources

How Does the Sun Shine?

• inventory of stellar energy reserviors
• ranking via energy conservation